EP0430629A3 - Information recording media - Google Patents

Information recording media Download PDF

Info

Publication number
EP0430629A3
EP0430629A3 EP19900312846 EP90312846A EP0430629A3 EP 0430629 A3 EP0430629 A3 EP 0430629A3 EP 19900312846 EP19900312846 EP 19900312846 EP 90312846 A EP90312846 A EP 90312846A EP 0430629 A3 EP0430629 A3 EP 0430629A3
Authority
EP
European Patent Office
Prior art keywords
information recording
center hole
recording media
insertion portion
disposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19900312846
Other versions
EP0430629B1 (en
EP0430629A2 (en
Inventor
Masayoshi C/O Mitsui Petrochem. Ind. Ltd. Kurisu
Suguru C/O Mitsui Petrochem. Ind. Ltd. Tokita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Chemicals Inc
Original Assignee
Mitsui Petrochemical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsui Petrochemical Industries Ltd filed Critical Mitsui Petrochemical Industries Ltd
Publication of EP0430629A2 publication Critical patent/EP0430629A2/en
Publication of EP0430629A3 publication Critical patent/EP0430629A3/en
Application granted granted Critical
Publication of EP0430629B1 publication Critical patent/EP0430629B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/24018—Laminated discs
    • G11B7/24024—Adhesion or bonding, e.g. specific adhesive layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2538—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycycloolefins [PCO]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/256—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers improving adhesion between layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24304—Metals or metalloids group 2 or 12 elements (e.g. Be, Ca, Mg, Zn, Cd)
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/146—Laser beam

Landscapes

  • Adhesives Or Adhesive Processes (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

An information recording medium is described comprising two superposed resin substrates, at least one of which is provided on its inner surface with a recording layer and a center hole, a hub comprising two parts, each disposed on a respective side of the disc, and each part comprising an insertion portion disposed in the center hole and a flange portion extending over the surface of the respective substrate in the vicinity of the center hole, a notch provided on the insertion portion of each part, and an adhesive joining the hubs to the substrates and to each other. <IMAGE>
EP90312846A 1989-11-27 1990-11-27 Information recording media Expired - Lifetime EP0430629B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP307147/89 1989-11-27
JP30714789 1989-11-27

Publications (3)

Publication Number Publication Date
EP0430629A2 EP0430629A2 (en) 1991-06-05
EP0430629A3 true EP0430629A3 (en) 1992-09-16
EP0430629B1 EP0430629B1 (en) 1996-01-10

Family

ID=17965597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90312846A Expired - Lifetime EP0430629B1 (en) 1989-11-27 1990-11-27 Information recording media

Country Status (6)

Country Link
US (1) US5167996A (en)
EP (1) EP0430629B1 (en)
KR (1) KR910010429A (en)
AT (1) ATE132999T1 (en)
CA (1) CA2030899A1 (en)
DE (1) DE69024767T2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3880642T2 (en) * 1987-12-08 1993-11-18 Mitsui Petrochemical Ind Composition, curable with active rays, and medium for optical registration with this hardened composition.
JPH05225609A (en) * 1992-02-06 1993-09-03 Tdk Corp Optical disk base plate and optical disk
US5391414A (en) * 1992-09-21 1995-02-21 Minnesota Mining And Manufacturing Company Diskettes having crosslinked adhesive bond to hub
US5538774A (en) * 1994-07-29 1996-07-23 Minnesota Mining And Manufacturing Company Internally damped rotatable storage article
DE19631319A1 (en) * 1995-08-15 1997-02-20 Minnesota Mining & Mfg Optical disc for digital data recording
DE19642716A1 (en) * 1996-10-16 1998-04-23 Thomson Brandt Gmbh Playback or recording device for optical recording media
GB2340654A (en) * 1997-06-03 2000-02-23 Seagate Technology Optical disc for optical storage system
US5879774A (en) * 1997-12-03 1999-03-09 Eastman Kodak Company Multilayer laminate elements having an adhesive layer
KR100299241B1 (en) * 1998-04-15 2001-10-27 구자홍 Method for manufacturing optical disc and optical medium
JP2003513122A (en) 1999-10-28 2003-04-08 スリーエム イノベイティブ プロパティズ カンパニー Compositions and articles made therefrom
US6500510B1 (en) 1999-11-04 2002-12-31 Molecular Storage Technologies, Inc. Molecular level optical information storage devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0320237A2 (en) * 1987-12-08 1989-06-14 Mitsui Petrochemical Industries, Ltd. Active energy ray-curable composition and optical recording medium having cured product of the composition
EP0301829B1 (en) * 1987-07-27 1994-03-09 Mitsui Petrochemical Industries, Ltd. Information recording discs

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4230814A (en) * 1979-02-12 1980-10-28 General Electric Company Heat curable compositions
JPS647391A (en) * 1987-03-16 1989-01-11 Pioneer Electronic Corp Optical information disk
US4944982A (en) * 1988-04-04 1990-07-31 Fuji Photo Film Co., Ltd. Information recording medium having magnetizable hub

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301829B1 (en) * 1987-07-27 1994-03-09 Mitsui Petrochemical Industries, Ltd. Information recording discs
EP0320237A2 (en) * 1987-12-08 1989-06-14 Mitsui Petrochemical Industries, Ltd. Active energy ray-curable composition and optical recording medium having cured product of the composition

Also Published As

Publication number Publication date
KR910010429A (en) 1991-06-29
DE69024767T2 (en) 1996-06-13
DE69024767D1 (en) 1996-02-22
EP0430629B1 (en) 1996-01-10
US5167996A (en) 1992-12-01
EP0430629A2 (en) 1991-06-05
CA2030899A1 (en) 1991-05-28
ATE132999T1 (en) 1996-01-15

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